Q How can I learn whether a pipeline is under my property? Posted6 years, 11 months and 14 days ago A Answered6 years, 11 months and 14 days ago Answered byJames O'Bryant You can find out if there is a pipeline near you by checking the National Pipeline Mapping System Public Map Viewer at www.npms.phmsa.dot.gov Also, look for pipeline markers. These are signs, located at regular intervals, that include information about the product transported and the transmission pipeline operator. If you have a pipeline on your property, you will get regular mailings from the pipeline owner. Be sure to read any mailings you receive from pipeline companies!